Javascript：运行函数后添加'false'

本文介绍了Javascript：运行函数后添加'false'的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

。

I'm analyzing a plugin as I want to modify it. I see various events firing functions like this:

    document.getElementById(this.config.form).addEventListener("submit", this._submit, false);

My question is - what does false on the end actually do? Is it the same as adding return = false on the end of a function? If so, what is the purpose of adding this?

解决方案

It's useCapture variable.

See MDN.

这篇关于Javascript：运行函数后添加'false'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！